The error msg:
Not a tramp file name:
/home/woop/.emacs.d/autoback/!ssh:address@hidden:!home!subnet142.com!admin!test~

This file name isn't a Tramp file name, indeed. But there shouldn't
be even a check for.
Could you, please, apply (setq debug-on-error t) and rerun the test?
The resulting backtrace should give us more information.